Data communication network
DATA LINK LAYER Data link layer is responsible for converting data stream to signals bit by bit and to send that over the underlying hardware . Data link layer picks up data from hardware which are in the form of electtical signals, assembles them in a recognizable frame format, and hands over to upoer layer. ALOHA :- The aloha protocol was designed as a part of a project at the universe of Hawaii. It provided data transmission between computers on several of the Hawaiian Islands. Involving packet radio networks. Aloha is a multiple access protocol at the data link layer and proposes how multiple terminals access the medium without interferences or collision. There are two different versions of aloha. 1) pure aloha: In pure aloha, the stations simply transmit fram...